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Volcanoes

Volcanoes are shaped like mountains, but they eject lava due to tectonic activities beneath the Earth's surface. This can result in eruptions, depending on the intensity and the type of volcano, and cause damage.

16,009 Questions

What do you call the melted rock coming from a volcano?

The melted rock coming from a volcano is called lava.

Is there any evidence of an extinct volcano in Rhode Island?

There is evidence of an extinct volcano in Rhode Island known as the Diamond Hill volcano. It is located in Cumberland and is believed to have been active around 200 million years ago. Today, it is a popular hiking destination where visitors can see remnants of its volcanic history.

What are the two types of rocks would you find near a volcano and why?

Igneous - is found deep inside the Earth, where it's hot, it's hot enough to melt rock. After a while it cools down. As it cools it forms igneous rock. Igneous contains randomly interlocking crystals. Igneous rocks like basalt and granite non-porous and so very hard and tough.

Metamorphic Rock - the temperature for metamorphic rock is hot enough to mold rock under pressure, but not enough to melt it. The difference for metamorphic rock is that the crystals are arranged in layers. That's due to the high pressure. Slate is metamorphic rock formed from shale, and marble is metamorphic rock formed from limestone.

How do you demonstrate tectonic plates near a transform boundary using your hands?

You can demonstrate tectonic plates near a transform boundary by placing your hands parallel to each other with one hand moving in one direction and the other hand moving in the opposite direction. This movement mimics the horizontal sliding past each other that occurs at a transform boundary.

When do volcanoes puff smoke?

Volcanoes puff smoke when magma beneath the surface heats up and creates pressure, causing the release of gases and ash. This process usually occurs before or during an eruption as the volcano becomes more active.

Are sedimentary rocks made when molten lava cools?

No, sedimentary rocks are formed through the accumulation and compression of sediment (such as sand, mud, and organic material) over time. Lava cools and solidifies to form igneous rocks, not sedimentary rocks.

How can scientists measure the ground around a volcano before an eruption?

Scientists can measure the ground around a volcano using techniques such as GPS monitoring to detect ground deformation caused by magma movement, seismometers to track seismic activity related to magma movement, and gas sensors to monitor changes in gas emissions that can indicate increasing volcanic activity. These tools help scientists to assess the volcano's behavior and potential for eruption.

What gas is produced when hot magma rises?

When hot magma rises to the surface, it can release various gases, such as water vapor, carbon dioxide, sulfur dioxide, and hydrogen sulfide. These gases can be released through volcanic eruptions or as gas bubbles escaping from magma as it ascends.

Where is Yellowstone national volcano?

Yellowstone National Park is located in the U.S. states of Wyoming, Montana, and Idaho. It contains the volcano caldera known as the Yellowstone Caldera, which is considered an active volcano system.

Is Central Park a volcano?

No, Central Park is not a volcano. It is a large public park located in the center of Manhattan, New York City. It was not formed by volcanic activity.

Is eruption of mt Pinatubo considered as historical?

Yes, the eruption of Mount Pinatubo in 1991 is considered a historical event because it was one of the most powerful volcanic eruptions of the 20th century. The eruption had significant global impacts, including lowering global temperatures and affecting regional climate patterns.

Where would you find a volcano underwater?

Underwater volcanoes, also known as submarine volcanoes, can be found in the ocean on the ocean floor, typically along mid-ocean ridges or hotspots. They can also be located near convergent plate boundaries where tectonic plates are moving towards each other.

What would you most likely find in a volcano?

In a volcano, you would most likely find molten rock (magma), gases such as water vapor and carbon dioxide, ash, and possibly lava flowing out of the vent.

Is new crust formed at a conservative plate boundary?

New crust is not formed at conservative plate boundaries. Instead, these boundaries involve plates sliding past each other horizontally without any creation or destruction of crust. This movement can cause earthquakes as the plates interact.

How does the viscosity affect of lava affect its flow rate?

Viscosity means how runny it is. Thus a lava with low viscosity will erupt fast and form long, wide spreading lava flows (eg Hawaii) and lavas of high viscosity will erupt slowly and form lava domes (eg Mt. St. Helens).

How big is grimsvotn?

Grimsvotn is one of the largest and most active volcanoes in Iceland. Its caldera, which is the crater at the top of the volcano, is approximately 900 meters in diameter.

Why does a subduction zone drag a continent towards the zone?

A subduction zone occurs when one tectonic plate is forced beneath another, typically because it's denser. As the oceanic plate descends into the mantle, it can pull the attached continental plate along with it due to their interlocking edges. This dragging motion of the continent towards the subduction zone is a result of the complex forces and interactions between the plates at the boundary.

Does mauna loa have pyroclastic flow?

No. Mauna Loa is a shield volcano. It produces lava flows during its eruption but would almost never produce pyroclastic flows.

How does oceanic crust form at constructive plate margins?

Oceanic crust forms at constructive plate margins through seafloor spreading. Magma rises up from the mantle to fill the gap created as two tectonic plates move apart. This magma solidifies to create new oceanic crust. Over time, this process can lead to the formation of mid-ocean ridges.

Are plate tectonics and plate movements the same thing?

No they are not the same thing.

Plate Tectonics is the study of mechanisms and the results of large-scale movement of the earth's crust.

Tectonic Plates are large sections of the earth's crust that float on top of semi-molten rocks of the upper mantle.

Are end plate osteophytosis and osteoarthritis the same thing?

No, end plate osteophytosis is a type of osteophyte formation at the vertebral endplates, whereas osteoarthritis is a degenerative joint disease that affects the entire joint. End plate osteophytosis may be associated with osteoarthritis, but they are not synonymous.

Can lava rocks be used in a wood buring outdoors fire pit?

Yes, lava rocks can be used as a fire pit filler or decorative element in a wood-burning outdoor fire pit. They help distribute heat more evenly and can help with heat retention. Just be sure to verify that the specific type of lava rocks you have are safe for use in high-heat applications.

What is the lava in the Andes called?

The lava in the Andes is typically referred to as Andesitic lava, due to its composition being rich in silica and forming characteristic volcanic landforms in the Andean region.

Does the Gobi Desert have volcanoes?

No, the Gobi Desert does not have any active volcanoes. It is primarily a cold desert with rocky and sandy terrain, and does not have the geological conditions necessary for volcanic activity.